- https://www.washingtonexaminer.com/policy/healthcare/2895532/ransomware-attack-on-unitedhealth-hits-provider-payments/www.washingtonexaminer.com/policy/healthcare/2895532/ransomware-attack-on-unitedhealth-hits-provider-payments
- SEC filing (form 8-K)www.sec.gov/Archives/edgar/data/731766/000073176624000045/unh-20240221.htm